Manual product feeding alignment device

Abstract

The utility model provides a product manual feeding alignment device which comprises a feeding positioning mechanism, a carrying arm and a working position positioning mechanism, the feeding positioning mechanism comprises a feeding jig and a feeding base, the carrying arm comprises a mounting base and a carrying jig, and the working position positioning mechanism comprises a working base and a working jig and further comprises a centering shaft body for assisting centering. The positions, deviating from the axis of the centering shaft body, of the top and the bottom of the centering shaft body are each provided with a first positioning part used for circumferential limiting. Second positioning parts are arranged at the positions, deviating from the center, of the top of the feeding base, the bottom of the mounting base and the top of the working base. The feeding base, the mounting base and the working base are each provided with a sixth positioning part matched with the centering shaft body in a radial limiting mode. The positioning references of the three parts are aligned by centering the shaft body, so that the consistency of the positioning references in the feeding, carrying and machining processes can be ensured; scale marks are not needed, even if the base deviates, centering and positioning can be achieved, the debugging and centering difficulty is lowered, and the debugging and centering speed is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to a technical field of alignment, especially a product manual feeding alignment device. BACKGROUND

[0002] At present, the related alignment modes in the market mainly include manual alignment (mechanical alignment) and automatic alignment (CCD image taking guidance alignment). The automatic alignment generally includes CCD image taking guidance and platform correction. This mode has high equipment integration, needs to configure an automatic adjustment structure, and is matched with a visual industrial computer, and is mainly used in automatic equipment, but the cost is high. The manual alignment generally adopts mechanical alignment, sets an XY alignment edge on a jig platform, and is mainly used in semi-automatic equipment. Although the cost is low, it is only suitable for the feeding of workpieces with flat surfaces. However, if the product is a special curved surface, it is necessary to ensure the deviation of the XY position and the theta angle of the product during feeding. The general manual mechanical alignment cannot meet the requirements. Therefore, in order to ensure accurate feeding, researchers usually design a profiled feeding jig, a carrying jig, and a work jig to accurately place the product for processing. However, the three jigs usually have the problem of reference deviation during use, which leads to unqualified product processing. The existing method for solving this problem is to set corresponding scale lines on the corresponding bases of the jigs. As long as the jigs are aligned with the scale lines, they are considered to be aligned. However, the bases will inevitably have a certain deviation after long-term use, which will lead to the situation that even if the jigs are aligned, the three positioning references cannot be adjusted consistently. Therefore, the user needs to use experience to troubleshoot. In addition, the scale lines may be covered by oil stains, dust, and other substances, which cannot be seen clearly. CONTENT OF THE UTILITY MODEL

[0003] To solve the above problems, the utility model aims to provide a product manual feeding alignment device.

[0004] The utility model discloses adopt following method to realize: a product manual feeding alignment device, including feeding positioning mechanism, carrying arm and work position positioning mechanism, the feeding positioning mechanism feeding fixture and feeding base, the carrying arm includes mounting seat and carrying fixture, the work position positioning mechanism includes work base and work fixture, including the centering of supplementary centering shaft body, the top and bottom of the centering shaft body are equipped with the first positioning part for circumferential limit at the off -centre of the centering shaft body, and the first positioning part of bottom and top is coaxial, the top of feeding base, the bottom of mounting seat and the top of work base are all equipped with the second positioning part with the first positioning part cooperation, the bottom of feeding fixture is equipped with the third positioning part with the second positioning part cooperation of feeding base, the top of carrying fixture is equipped with the fourth positioning part with the second positioning part cooperation of mounting seat, and the bottom of work fixture is equipped with the fifth positioning part with the second positioning part cooperation of work base, the sixth positioning part of the cooperation with the radial limit of centering shaft body is all equipped with the centering shaft body on feeding base, mounting seat and work base.

[0005] Preferably, further comprising a positioning pin, the first positioning part is a first positioning pin hole, the second positioning part is a second positioning pin hole, and the positioning pin can be inserted into the first positioning pin hole and the second positioning pin hole.

[0006] Preferably, the diameters of the first positioning pin hole and the second positioning pin hole are equal to the diameter of the positioning pin.

[0007] Preferably, the sixth positioning part of the feeding base is a first positioning groove opened at the top of the feeding base, the first positioning groove is the same in diameter as the centering shaft body, the second positioning pin hole is arranged on the bottom surface in the first positioning groove, and the centering shaft body can be inserted into the first positioning groove.

[0008] Preferably, the bottom of the feeding fixture is the same in shape and size as the first positioning groove, the third positioning part is a third positioning pin hole arranged at a position deviating from the axis of the feeding fixture, and the positioning pin can be inserted between the third positioning pin hole and the second positioning pin hole of the feeding base.

[0009] Preferably, the mounting seat comprises a mounting base plate and a fixture mounting plate, the sixth positioning part of the mounting seat is a positioning circular hole opened on the mounting plate, the lower surface of the fixture mounting plate is provided with a lower positioning circular table, the positioning circular table penetrates into the positioning circular hole, the diameter of the positioning circular table is the same as the diameters of the positioning circular hole and the centering shaft body, and the second positioning pin hole is arranged on the lower surface of the positioning circular table.

[0010] Preferably, the shape and size of the top of the carrying jig are the same as those of the positioning hole, the fourth positioning part is provided on the upper surface and deviates from the axis of the carrying jig, and is a fourth positioning pin hole, and a positioning pin can be inserted between the fourth positioning pin hole and the second positioning pin hole of the mounting seat.

[0011] Preferably, the first locking hole is provided on the position deviating from the circular table of the jig mounting plate, the corresponding mounting base is provided with a second locking hole, a locking bolt can be inserted between the first locking hole and the second locking hole, and the second positioning pin hole penetrates the upper and lower surfaces of the jig mounting plate, the first positioning pin is inserted into the second positioning pin hole of the mounting base and the first positioning pin hole of the centering shaft body.

[0012] Preferably, the sixth positioning part of the working base is a second positioning groove provided on the top of the working base, the second positioning groove has the same diameter as the centering shaft body, the second positioning part is provided on the bottom surface in the second positioning groove, and the centering shaft body can be inserted into the second positioning groove.

[0013] Preferably, the shape and size of the bottom of the working jig are the same as those of the second positioning groove, the fifth positioning part is provided on the lower surface and deviates from the axis of the carrying jig, and is a fifth positioning pin hole, and a positioning pin can be inserted between the fifth positioning pin hole and the second positioning pin hole of the working base.

[0014] The beneficial effects of the present invention are: the present invention provides a manual loading and positioning device for a product. Compared with the existing technology, the present invention has at least the following technical effects: 1. Through the setting of the centering axis and the cooperation of the sixth positioning part of the mounting seat, the loading base and the working base, the radial alignment of the centering axis and the mounting seat, the loading base and the working base (that is, the alignment of the XY plane) can be easily achieved. Then, through the eccentric setting of the first positioning part on the centering axis and the setting of the second positioning part at the position off-center of the mounting seat, the loading base and the working base, the unified alignment of the θ direction of the mounting seat, the loading base and the working base can be achieved. Then, the third positioning part of the loading jig, the fourth positioning part of the transport jig, and the fifth positioning part of the working jig are cooperated with each second positioning part for fixed installation; the positioning references of the three are aligned by the centering axis, so that the positioning references during loading, transporting and processing can be guaranteed to be consistent; there is no need to use scale lines, and the base can be centered even if it is offset, which reduces the difficulty of debugging and centering and improves the speed of debugging and centering. 2. The first positioning part and the second positioning part are set as pin holes, and a positioning pin can be inserted between the two at the same time to complete the alignment in the circumferential direction, that is, the θ direction. It is simple and crude, and there is no need to align the centering axis and the corresponding base scale line. 3. The sixth positioning part is a groove or a circular hole that matches the shape and size of the centering axis. As long as the centering axis can be inserted into the groove or the circular hole, the XY direction alignment can be quickly achieved, which is convenient, fast and accurate. 4. The mounting seat is provided with a positioning circular hole mounting base and a jig mounting plate with a positioning frustum, so that the jig mounting plate loaded with the mounting base can rotate around the axis, so that the jig mounting plate can be aligned with the working base and the loading base in the θ direction, that is, the θ direction alignment of the transport jig, the loading jig and the working jig. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a manual loading and positioning device for a product of the utility model.

[0016] Figure 2 This is a schematic diagram of the separate states of a loading fixture and a loading base of a manual loading and positioning device of a product of the utility model.

[0017] Figure 3 This is a separate schematic diagram of a mounting base and a handling fixture of a manual loading and positioning device of a product of the utility model.

[0018] Figure 4 This is another separate schematic diagram of a mounting base and a handling fixture of a manual loading and positioning device of a product of the present invention.

[0019] Figure 5 This is a separate schematic diagram of a working base and a working fixture of a manual loading and positioning device of a product of the utility model.

[0020] Figure 6 is a structure schematic view of the centering shaft body of a product manual feeding alignment device.

[0021] Figure 7 is a work jig and carrying jig alignment debugging schematic view.

[0022] Figure 8 is a carrying jig and feeding jig alignment debugging schematic view.

[0023] Explanation of reference numerals: 1, feeding jig; 2, feeding base; 3, mounting seat; 31, mounting base plate; 32, jig mounting plate; 4, carrying jig; 41, fourth positioning part; 5, work base; 6, work jig; 61, fifth positioning part; 7, centering shaft body; 71, first positioning part; 8, second positioning part; 9, positioning pin; 10, sixth positioning part; 11, product. DETAILED DESCRIPTION

[0024] The utility model will be further explained in connection with the drawings and specific embodiments.

[0025] Please refer to Figures 1 to 8The utility model provides a product manual feeding alignment device, including feeding positioning mechanism, carrying arm and work position positioning mechanism, feeding positioning mechanism feeding fixture 1 and feeding base 2, the carrying arm includes mounting seat 3 and carrying fixture 4, the work position positioning mechanism includes work base 5 and work fixture 6, including auxiliary centering centering shaft body 7, the top and bottom of the centering shaft body 7 are equipped with the first positioning part 71 for circumferential limit at the shaft center of the centering shaft body 7, and the first positioning part 71 of bottom and top is coaxial, the top of feeding base 2, the bottom of mounting seat 3 and the top of work base 5 are all equipped with the second positioning part 8 matched with the first positioning part 71, the bottom of feeding fixture 1 is equipped with the third positioning part matched with the second positioning part 8 of feeding base 2, the top of carrying fixture 4 is equipped with the fourth positioning part 41 matched with the second positioning part 8 of mounting seat 3, the bottom of work fixture 6 is equipped with the fifth positioning part 61 matched with the second positioning part 8 of work base 5, the sixth positioning part 10 matched with the radial limit of centering shaft body 7 is all equipped on feeding base 2, mounting seat 3 and work base 5, through the setting of centering shaft body 7, and the sixth positioning part 10 cooperation of mounting seat 3, feeding base 2 and work base 5, the radial line of centering shaft body 7 and mounting seat 3, feeding base 2 and work base 5 can be easily realized (i.e. the alignment of XY plane), then through the first positioning part 71 eccentrically arranged on centering shaft body 7, and the second positioning part 8 arranged on the position of mounting seat 3, feeding base 2 and work base 5 deviating from the center, the unified alignment of mounting seat 3, feeding base 2 and work base 5 in the direction of theta can be realized, then through the third positioning part of feeding fixture 1, the fourth positioning part 41 of carrying fixture 4, the fifth positioning part 61 of work fixture 6 and each second positioning part 8 cooperation fixed installation, through centering shaft body 7, the alignment of the positioning reference of three is realized, so that the positioning reference in the feeding, carrying and processing process is consistent, without using the scale line, even if the base deviates, the centering positioning can be realized, the difficulty of debugging centering is reduced, and the speed of debugging centering is improved. Product 11 is placed in the profiling cavity of feeding fixture 1.

[0026] Please refer to Figures 1 to 8 , preferably, still including positioning pin 9, the first positioning part 71 is first positioning pin hole, the second positioning part 8 is second positioning pin hole, the positioning pin 9 can be inserted into the first positioning pin hole and the second positioning pin hole. The first positioning part 71, the second positioning part 8 are set as pin hole, a positioning pin 9 can be inserted between them, the alignment in circumferential direction, i.e. the direction of theta, is realized, which is simple and rough, and the scale line of centering shaft body 7 and the corresponding base does not need to be engraved.

[0027] Please refer to Figures 1 to 8, preferably, the diameter of the first positioning pin hole and the second positioning pin hole is equal to the diameter of the positioning pin 9. It ensures the accurate alignment in the direction of θ. Of course, the positioning pin 9 can be fixed integrally with the first positioning pin hole, that is, the upper surface and the lower surface of the centering shaft body 7 have protruding cylinders coaxially.

[0028] Please refer to Figures 1 to 2 , Figure 6 , preferably, the sixth positioning part 10 of the feeding base 2 is a first positioning groove opened at the top of the feeding base 2, the diameter of the first positioning groove is the same as that of the centering shaft body 7, the second positioning pin hole is arranged on the bottom surface in the first positioning groove, and the centering shaft body 7 can be inserted into the first positioning groove. Since the size of the centering shaft body 7 and the first positioning groove is matched, the centering shaft body 7 is put into the first groove to realize the alignment in the XY plane; then the centering shaft body is rotated to make the insertion pin inserted into the first positioning pin hole and the second positioning pin hole, so as to complete the alignment in the direction of θ. Of course, in other embodiments, the sixth positioning part 10 of the feeding base 2 is a protruding circular table, and the upper surface and the lower surface of the centering shaft body 7 have a circular ring with the inner circle of the circular ring being the same in diameter as the protruding circular table. Similarly, the working base 5 has a circular ring with the outer circle of the circular ring being the same in size as the corresponding part of the feeding jig 1, the carrying jig 4, and the working jig 6.

[0029] Please refer to Figures 1 to 2 , Figure 6 , preferably, the bottom of the feeding jig 1 is the same in shape and size as the first positioning groove, the third positioning part is arranged at a position deviated from the axis of the feeding jig 1, and is a third positioning pin hole, and the third positioning pin hole and the second positioning pin hole of the feeding base 2 can be inserted with the positioning pin 9. Similarly, the feeding jig 1 is put into the first positioning groove to complete the alignment with the feeding base 2 in the XY plane, then the positioning pin 9 is rotated to be inserted into the third positioning pin hole and the second positioning pin hole to complete the alignment in the direction of θ. Of course, the third positioning pin hole can be fixed with the positioning pin 9, and the feeding jig 1 and the feeding base 2 are positioned directly through the positioning pin 9.

[0030] Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 6, preferably, the mounting base 3 comprises a mounting plate 31 and a jig mounting plate 32, the sixth positioning part 10 of the mounting base 3 is a positioning round hole formed on the mounting plate, the lower surface of the jig mounting plate 32 is provided with a lower positioning round table, the positioning round table penetrates into the positioning round hole, the diameter of the positioning round table is the same as the diameter of the positioning round hole and the centering shaft body 7, and the second positioning pin hole is arranged on the lower surface of the positioning round table. The first locking hole is arranged at the position deviating from the round table of the jig mounting plate 32, and the second locking hole is arranged on the corresponding mounting plate 31, so that the jig mounting plate 32 and the mounting plate can be completely fixed after alignment adjustment; and the second positioning pin hole penetrates through the upper and lower surfaces of the jig mounting plate 32, so that the positioning pin 9 can be inserted into the first positioning pin 9 of the centering shaft body 7 after adjustment, the circumferential limiting of the two is realized, and then the jig mounting plate 32 is fixed by being locked into the first locking hole and the second locking hole through bolts.

[0031] Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 6 , preferably, the shape and size of the top of the carrying jig 4 are the same as those of the positioning round hole, the fourth positioning part 41 deviating from the axis of the carrying jig 4 is arranged on the upper surface and is a fourth positioning pin hole, and the fourth positioning pin hole and the second positioning pin hole of the mounting base 3 can insert the positioning pin 9. The alignment and connection of the carrying jig 4 and the jig mounting base 3 are facilitated.

[0032] Please refer to Figure 1 , Figure 5 , Figure 6 , preferably, the sixth positioning part 10 of the working base 5 is a second positioning groove formed on the top of the working base 5, the second positioning groove has the same diameter as the centering shaft body 7, the second positioning is arranged on the bottom surface in the second positioning groove, and the centering shaft body 7 can be inserted into the second positioning groove. The alignment principle of the centering shaft body 7 and the feeding base 2 is not expanded in detail.

[0033] Please refer to Figure 1 , Figure 5 , Figure 6 , preferably, the shape and size of the bottom of the working jig 6 are the same as those of the second positioning groove, the fifth positioning part 61 deviating from the axis of the carrying jig 4 is arranged on the lower surface and is a fifth positioning pin hole, and the fifth positioning pin hole and the second positioning pin hole of the working base 5 can penetrate the positioning pin 9. The working principle of the feeding jig 1 loaded into the feeding base 2 is not expanded in detail.

[0034] Preferably, the first positioning groove, the second positioning groove and the positioning round hole are provided with chamfers at edges, so as to facilitate pushing the centering shaft body 7, and vice versa.

[0035] The utility model has the following working principle:

[0036] As shown in the figure, the work jig 6 is aligned with the carrying jig 4, and the specific steps are as follows: Figure 7

[0037] A. According to the work jig, the centering shaft body 7 is installed in cooperation with the work base 5, and the centering shaft body 7 is placed into the second positioning groove (the outer circle of the centering shaft body 7 is centered, and the positioning pins 9 and the positioning pin holes are angularly divided) ;

[0038] B. The carrying arm is moved to a position close to the centering shaft body 7, and the XY position is adjusted to ensure that the positioning round hole of the mounting base plate 31 of the carrying arm is perfectly aligned with the centering shaft body 7. The positioning round hole of the mounting base plate 31 of the carrying arm can be inserted into the centering shaft body 7 by lifting the carrying arm Z axis, and the XY alignment of the two is completed in this way;

[0039] C. The second positioning pin hole of the upper jig mounting plate 32 of the carrying arm is installed with the positioning pin 9 in cooperation with the centering shaft, and at this time the angle deviation needs to be adjusted to adjust the angle of the upper jig mounting plate 32 of the arm, and the θ angle alignment of the two is completed in this way;

[0040] D. The XY position and the θ angle of the work jig 6 and the carrying jig 4 can be adjusted and corrected in this way.

[0041] The alignment and adjustment method of the carrying jig 4 and the feeding jig 1 is as follows:

[0042] As shown in the figure, the carrying jig 4 is aligned with the feeding jig 1, and the specific steps are as follows: Figure 8

[0043] A. According to the carrying arm jig, the auxiliary centering shaft is placed between the carrying arm and the feeding base 2 (the outer circle of the centering shaft body 7 is centered, and the pins are angularly divided) ;

[0044] B. According to the jig mounting plate 32 of the carrying arm, the centering shaft body 7 is aligned with the jig mounting plate 32 in XYθ;

[0045] C. The distance between the feeding base 2 and the jig mounting plate 32 of the carrying arm is adjusted, that is, the outer circle of the centering shaft body 7 is placed into the first positioning groove of the feeding base, and the XY alignment of the two is completed in this way;

[0046] D. The mounting pin in the feeding base is installed in cooperation with the auxiliary centering shaft, and at this time the angle deviation needs to be adjusted to adjust the angle of the feeding base 2, and the θ angle alignment of the two is completed in this way; ​​

[0047] E, so debugging can be installed on the arm base 3 and the XY position of the loading base 2 and the angle of θ debugging correction.

[0048] Finally, the work base 5 on the work of the alignment into the work fixture 6, on the loading base 2 on the alignment into the loading fixture 1, the installation of the substrate 31 on the positioning hole alignment into the handling fixture 4, can complete the final alignment debugging.

[0049] Of course, θ square and XY direction can be directly one step to complete the alignment, that is, first, the positioning pin 9, inserted into the first positioning pin hole, and then the second positioning pin hole is aligned with the positioning pin 9, and then adjust the position of the centering shaft 7 so that it can be inserted into the corresponding groove or positioning hole, and the installation of the jig can also be used in this way.

[0050] It should be noted that in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, which can be directly connected, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change.

[0051] Secondly: the utility model discloses the embodiment of the drawing, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other.

[0052] Finally, the above-mentioned is only the preferred embodiment of the utility model, the protection scope of the utility model is not only limited to the above-mentioned embodiment, all technical solutions under the idea of the utility model belong to the protection scope of the utility model.

[0053] It should be pointed out that for ordinary skilled persons in the art, without departing from the principle of the utility model, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the utility model.

Claims

1. A product manual feeding alignment device, comprising a feeding positioning mechanism, a carrying arm and a working position positioning mechanism, the feeding positioning mechanism comprising a feeding jig and a feeding base, the carrying arm comprising a mounting seat and a carrying jig, and the working position positioning mechanism comprising a working base and a working jig, characterized in that, The centering shaft body of the auxiliary centering includes a first positioning part for circumferential limiting at the top and bottom of the centering shaft body, which are coaxial with the first positioning parts of the bottom and top; the second positioning part of the top of the feeding base, the bottom of the mounting seat and the top of the working base is provided with the first positioning part, the bottom of the feeding jig is provided with the third positioning part matched with the second positioning part of the feeding base, the top of the carrying jig is provided with the fourth positioning part matched with the second positioning part of the mounting seat, and the bottom of the working jig is provided with the fifth positioning part matched with the second positioning part of the working base; the feeding base, the mounting seat and the working base are provided with the sixth positioning part matched with the radial limiting of the centering shaft body.

2. The product manual loading alignment device according to claim 1, wherein, The first positioning part is a first positioning pin hole, the second positioning part is a second positioning pin hole, and the positioning pin can be inserted into the first positioning pin hole and the second positioning pin hole.

3. The product manual loading alignment device of claim 2, wherein, The diameters of the first positioning pin hole and the second positioning pin hole are equal to the diameter of the positioning pin.

4. The product manual loading alignment device of claim 2, wherein, The sixth positioning part of the feeding base is a first positioning groove opened at the top of the feeding base, the first positioning groove is the same as the diameter of the centering shaft body, the second positioning pin hole is provided on the bottom surface in the first positioning groove, and the centering shaft body can be inserted into the first positioning groove.

5. The product manual loading alignment device of claim 4, wherein, The bottom shape and size of the feeding jig are the same as the shape and size of the first positioning groove, the third positioning part is a third positioning pin hole provided at a position deviating from the shaft center of the feeding jig, and the positioning pin can be inserted between the third positioning pin hole and the second positioning pin hole of the feeding base.

6. The product manual loading alignment device of claim 2, wherein, The mounting seat includes a mounting base plate and a jig mounting plate, the sixth positioning part of the mounting seat is a positioning circular hole opened on the mounting plate, the lower surface of the jig mounting plate is provided with a lower positioning circular table, the positioning circular table is penetrated into the positioning circular hole, the diameter of the positioning circular table is the same as the diameters of the positioning circular hole and the centering shaft body, and the second positioning pin hole is provided on the lower surface of the positioning circular table.

7. The product manual loading alignment device of claim 6, wherein, The top shape and size of the carrying jig are the same as the shape and size of the positioning circular hole, the fourth positioning part is a fourth positioning pin hole provided on the upper surface and deviating from the shaft center of the carrying jig, and the positioning pin can be inserted between the fourth positioning pin hole and the second positioning pin hole of the mounting seat.

8. The product manual loading alignment device of claim 6, wherein, The first locking hole is provided at a position deviating from the circular table of the jig mounting plate, the corresponding mounting base plate is provided with a second locking hole, the positioning pin can be inserted between the first locking hole and the second locking hole, the second positioning pin hole penetrates through the upper and lower surfaces of the jig mounting plate, the first positioning pin is inserted into the second positioning pin hole of the mounting base plate and the first positioning pin hole of the centering shaft body.

9. The product manual loading alignment device of claim 2, wherein, The sixth positioning part of the working base is a second positioning groove opened at the top of the working base, the second positioning groove is the same as the diameter of the centering shaft body, the second positioning part is provided on the bottom surface in the second positioning groove, and the centering shaft body can be inserted into the second positioning groove.

10. The product manual loading alignment device of claim 9, wherein, The shape and size of the bottom of the work jig are the same as those of the second positioning groove, the fifth positioning part is provided on the lower surface and deviates from the shaft center of the carrying jig, is a fifth positioning pin hole, and a positioning pin can be inserted between the fifth positioning pin hole and the second positioning pin hole of the work base.

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